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Tapered gib, was: machining brass, how to ?
Thanks to all that replied.
I',ve been able to machine it, by using Rick advices and would like to say thanks to him for this wonderful idea. I've just tried to turn some steel I got around, that wasn't been able to get a nice finish until now, and magically I got the mirror finish I was searching for. I would advice this mod as first mod for new ( and old ) minilathe. Thanks again to Rick and to all . Pigi |
HF Special Orders
Ed Boysun
It looks like the folks at HF are starting a new program where you can
order catalog only items from their retail stores. If you go to their 'other' website Here <> , You'll see a link to a special order dept that they seem to be setting up at all their stores. Haven't seen this until a couple days ago, of course, I normally use the harborfreight.com instead of the harborfreightusa.com site that now features the special order link. Ed --- In 7x12minilathe@..., "troyscon" <troyscon@...> wrote: it cost $380.09. I think I'm gonna be happy with it. I did NOT get the |
Re: [SPAM] Re: 7x12 vs. DB200 Unimat
Charles E. Kinzer
I think you will find that most will tell you the mini-lathes are a great value and many will tell you they can be improved with a little work you can do to them. Some have even said it is more like getting a "kit". However, some have said they were completely happy with them out of the box.
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If it hasn't been mentioned already, www.mini-lathe.com describes chapter and verse about these things and lists a lot of the improvements that you can do and features you can add. A few things can make a big difference such as lapping the gibs and mating surfaces. And a few features are highly useful such as the guard to keep chips out of the gears on the back of the apron and making a carriage lock. If you have any basic alignment issues that are of concern to whatever parts you are making, you may have to do a little further work - but it is all doable and there is no end of help on this list and the 7x10minilathe list for such things. And much is already documented on the mini-lathe and Varmint Al sites and in the files and photos sections of the groups. Also, tooling like quick change tool posts and chucks and also spare parts are abundantly available from www.littlemachineshop.com which is another site worth visiting. I also have a Unimat as well as a 7x14 mini-lathe and a 12x36. The mini-lathe is simply a scaled down version of a real "engine lathe" (powered carriage feed and thread cutting ability) and things like the Unimat, Sherline, and Taig really are not, except you can get clunky options for such things. Also, the retail of the Unimat was $139 in the 60's, as I recall, and that is about $900 today. That underscores the excellent value of the mini-lathe. It's hard to predict where the Chinese economy and labor rate may be going in the future. Perhaps the same place the Japanese did decades ago (up, up, up). I suspect the really low prices of these things may not be around forever. Chuck K. ----- Original Message -----
From: Hugh To: 7x12minilathe@... Sent: Sunday, March 18, 2007 9:36 AM Subject: [SPAM] Re: [7x12minilathe] 7x12 vs. DB200 Unimat Itamar, That was sound advice from Gordy - refreshing to hear yet another praise for the far eastern lathes. I thought I would just add that the supplier is maybe as important as the lathe in this case. Here in the UK I find that maybe 1 or 2% of machines that I sell might have some problem or other - parts are in the post in as short a time as possible to put things right. Find a supplier that will give you an efficient after-sales service just in case, and you'll have no regrets buying a chinese lathe. The value for money is awesome! (so my enlightened customers tell me). Hugh ----- Original Message ----- From: Itamar Nissany To: 7x12minilathe@... Sent: Sunday, March 18, 2007 10:20 AM Subject: [7x12minilathe] 7x12 vs. DB200 Unimat Hi, I'm a new comer to this group. My major turning jobs were in the RC aircraft modeling as well as in the electronics mechanical side. I'm a retired hobbyist, and none of my activities is aimed for profit making. So far I've been using my DB200 Unimat lathe, which is absolutely not an accurate machine, not mentioning its age (I bought it in the early 60s). I would like to have your opinion regarding the suitability of a Chinese 7x12 mini lathe as a replacement to the Unimat. Thanks for your cooperation. Itamar Nissany ---------------------------------------------------------- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.413 / Virus Database: 268.18.12/724 - Release Date: 16/03/2007 |
Re: Removing Tang From A Morse Taper
Thanks John , I will see how hard it is first , I have found a metal
cutting disc for the angle grinder so I might just "attack it" with this anyway. John --- In 7x12minilathe@..., "John" <John@...> wrote: the taper wasn't hardened. I then took the easy way out, grabbed thedrill chuck in the 3 jaw and used a rolling center in the little hole inthe end of the tang. The parting blade cut part way through easilyand I finished up with a hacksaw while running at low RPM, then smoothedthe end with a file.drill hacksaw ,chuck in the tail stock. I assume it is hard steel. I have a metalmetal cutting band saw and an angle grinder that I could buy a cutting blade for. |
Re: Removing Tang From A Morse Taper
It pays to check the hardness before going to a lot of trouble to
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shorten the taper - its easy if the taper isn't hardened -- many of the Chinese tapers are soft. My chuck and taper were from HF; I used a file to determine that the taper wasn't hardened. I then took the easy way out, grabbed the drill chuck in the 3 jaw and used a rolling center in the little hole in the end of the tang. The parting blade cut part way through easily and I finished up with a hacksaw while running at low RPM, then smoothed the end with a file. John --- In 7x12minilathe@..., "jcmackastro" <jm@...> wrote:
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Re: 7x12 vs. DB200 Unimat
Itamar,
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That was sound advice from Gordy - refreshing to hear yet another praise for the far eastern lathes. I thought I would just add that the supplier is maybe as important as the lathe in this case. Here in the UK I find that maybe 1 or 2% of machines that I sell might have some problem or other - parts are in the post in as short a time as possible to put things right. Find a supplier that will give you an efficient after-sales service just in case, and you'll have no regrets buying a chinese lathe. The value for money is awesome! (so my enlightened customers tell me). Hugh ----- Original Message -----
From: Itamar Nissany To: 7x12minilathe@... Sent: Sunday, March 18, 2007 10:20 AM Subject: [7x12minilathe] 7x12 vs. DB200 Unimat Hi, I'm a new comer to this group. My major turning jobs were in the RC aircraft modeling as well as in the electronics mechanical side. I'm a retired hobbyist, and none of my activities is aimed for profit making. So far I've been using my DB200 Unimat lathe, which is absolutely not an accurate machine, not mentioning its age (I bought it in the early 60s). I would like to have your opinion regarding the suitability of a Chinese 7x12 mini lathe as a replacement to the Unimat. Thanks for your cooperation. Itamar Nissany ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.413 / Virus Database: 268.18.12/724 - Release Date: 16/03/2007 |
Re: Removing Tang From A Morse Taper
Most MT's are hardened and neither a hacksaw or bandsaw will touch them. I have cit several using an angle grinder and disc.
You need to measure carefully before you cut, if you cut too short you will not be able to ejrct it when you retract the tailstock below "0". To measure wind out the tailstock a couple of inches and mark the taper with a magic marker or tape etc then rewind to eject the MT and then wind down to "0" and measure the depth. THen transfer the measurement to the MT and cut to length. Cut slowly and cool in water so you don't soften the MT and then face up and give a light chamfer with a bench grinder - job done! Gerry Leeds UK From: "jcmackastro" <jm@...>_________________________________________________________________ MSN Hotmail is evolving - check out the new Windows Live Mail |
Re: 7x12 vs. DB200 Unimat
Itamar Nissany
Thank you Gordon,
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Indeed, I assumed it to be the situation. Best regards, Itamar. -------Original Message-------
From: Gordon Date: 03/18/07 14:52:51 To: 7x12minilathe@... Subject: [7x12minilathe] Re: 7x12 vs. DB200 Unimat --- In 7x12minilathe@..., "Itamar Nissany" <nissanit@...> wrote: in the electronics mechanical side. I'm a retired hobbyist, and none of mynot an accurate machine, not mentioning its age (I bought it in the early60s). Chinese 7x12 mini lathe as a replacement to the Unimat.slam the chinese lathes onthis site. But for the money, these little machines do a really good job. As long as you take a couple light finishing cuts they hold tolerences really well. I use mine in a small parts machine shop business, along with a 14x40 and a couple mills and other assorted machines. So I get daily use out of them and have had no problems. I've been pleased with mine and would suggest it to anyone....GORDY |
Re: Removing Tang From A Morse Taper
Thanks for the reply.
I do have a 3" blade and holder. I forgot I had it until you said!! John - In 7x12minilathe@..., "wardwmiller" <wardmiller@...> wrote: suitable padding) vertically in my X-Y vise on the drill press table. Idrill press at slow speed, I fed the vise against it. I was surprisedhow easily it cut. After that operation, I dressed up the edge of thecut in the grinder.drill hacksaw ,chuck in the tail stock. I assume it is hard steel. I have a metalmetal cutting band saw and an angle grinder that I could buy a cutting blade for. |
Re: Removing Tang From A Morse Taper
John, when I wanted to shorten the tang on mine, I purchased a 3"
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Cut-Off Blade with Mandrel. Then I clamped the Taper (with suitable padding) vertically in my X-Y vise on the drill press table. I wrapped a wet towel around the Taper, to act as a heat sink, and placed the Cut-Off Wheel in the drill press chuck. Running the drill press at slow speed, I fed the vise against it. I was surprised how easily it cut. After that operation, I dressed up the edge of the cut in the grinder. --- In 7x12minilathe@..., "jcmackastro" <jm@...> wrote:
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Removing Tang From A Morse Taper
Hi All,
I want to remove the tang from the morse taper that holds my drill chuck in the tail stock. I assume it is hard steel. I have a hacksaw , metal cutting band saw and an angle grinder that I could buy a metal cutting blade for. An suggestions as the best method ? John |
Re: 7x12 vs. DB200 Unimat
Gordon
--- In 7x12minilathe@..., "Itamar Nissany" <nissanit@...>
wrote: in the electronics mechanical side. I'm a retired hobbyist, and none of mynot an accurate machine, not mentioning its age (I bought it in the early60s). Chinese 7x12 mini lathe as a replacement to the Unimat.slam the chinese lathes onthis site. But for the money, these little machines do a really good job. As long as you take a couple light finishing cuts they hold tolerences really well. I use mine in a small parts machine shop business, along with a 14x40 and a couple mills and other assorted machines. So I get daily use out of them and have had no problems. I've been pleased with mine and would suggest it to anyone....GORDY |
7x12 vs. DB200 Unimat
Itamar Nissany
Hi,
I'm a new comer to this group. My major turning jobs were in the RC aircraft modeling as well as in the electronics mechanical side. I'm a retired hobbyist, and none of my activities is aimed for profit making. So far I've been using my DB200 Unimat lathe, which is absolutely not an accurate machine, not mentioning its age (I bought it in the early 60s). I would like to have your opinion regarding the suitability of a Chinese 7x12 mini lathe as a replacement to the Unimat. Thanks for your cooperation. Itamar Nissany |
Re: Just Ordered a Homier - back in stock but "Supplies Limited"
Thanks - Great Link to Varmint Al's, that'll get me started. I'll get
an order in to Enco too, they're pretty quick - I'm sure I'll have the tools before the lathe arrives. Anyone in the Northern VA area know where I can pick up some bar and round stock? I'd like to avoid shipping on raw metal. |
Re: LMS Wood Turning Tool Rest, needs mods out of the box?
Just because you have a small lathe doesn't mean you shouldn't use
big tools. Big tools give you more leverage. See if you can talk to a local woodturner (in person) and get their opinion on what tools you should try and "how" to use them. --- In 7x12minilathe@..., "wrlabs" <wrlabs@...> wrote: lathe awaychisels. Then again, for turning on a small lathe, you can get handleswith using almost anything that's a usable shape.I wondered about that. I *assumed* that the difference in the had to do with the small lathe, keyword *assumed* :-).I got don't work out. |
Re: 8x12 is now officially "ON ORDER"
Mike Payson
Not certain... This (
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) is the exact set that I bought when I bought my lathe. Like I said, the results on aluminum were lousy. My assumption of the problem is two things... By all accounts, aluminum cuts better with HSS. In addition, Aluminum cutters should have a top rake, which those bits don't have. I'm not saying that the carbide bits don't have their place, but considering how expensive they are, and the poor results, I would certainly avoid them. Grinding HSS bits is easy enough, & the grinder is cheap enough that it seems well worth learning. On 3/17/07, houe2005 <houe2005@...> wrote:
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Re: 8x12 is now officially "ON ORDER"
From my experience, HF is VERY wishy-washy. It depends on who you
talk to, which store, etc. Aparently this store started a Special Order program about a week and a half ago. They didn't even bat an eye when I gave them the coupon from the web. I know what you mean about the 8x vs. 7x for parts. That was one of the tradeoffs when I decided on this machine. I knew it going in. Thanks for the tip when ordering from LMS. --- In 7x12minilathe@..., "troyscon" <troyscon@...> wrote: HF store, but use the 30% off coupon? I would have killed to have beendeal! I thought 8x12's and other non-store items (like the X3) could neverbe bought through a store.especially a QCTP which you will want FOR SURE and only from Lathemaster as thealot of available parts(chucks etc) that will fit without mods and |
Re: LMS Wood Turning Tool Rest, needs mods out of the box?
wrlabs
--- In 7x12minilathe@..., "roylowenthal"
<roylowenthal@...> wrote: I wondered about that. I *assumed* that the difference in the handles had to do with the small lathe, keyword *assumed* :-). Well, if they don't work out, I learned something. Some nice stuff there, bookmarked the chisels just in case the ones I got don't work out. Thanks & take care, Vikki. |
Re: LMS Wood Turning Tool Rest, needs mods out of the box?
Those may work, looks like "lathe" was put in the description to
catch search engines - they look like carving chisels more than lathe chisels. Then again, for turning on a small lathe, you can get away with using almost anything that's a usable shape. Roy --- In 7x12minilathe@..., "wrlabs" <wrlabs@...> wrote: of postwhat you bought, I can't see it being very sturdy as designed. I inis best supported from below, not from the side.As I have it set up now, it seems pretty sturdy, but the mount is the limited space available.onAs for height, you willcenter, this puts the tool rest below center. Remember your tool horizontal).be held at an angle (handle drooping 10-20 degrees below I'llHope this helps. I plan on using my lathe for wood initially so this set:be able to give you more feedback in a few weeks.I do indeed have much to learn, apparently I misunderstand. What I Tool- Set_W0QQitemZ280094649015QQcategoryZ57125QQssPageNameZWDVWQQrdZ1QQcmdZ ViewItem Lathe. Hope I did good as those sure seemed to be very reasonable. Worstor find a videos I can learn from, so far I have been lucky :).(?) that she made pens on (quite nice ones too!). Later I ran into aand I was flat hooked! This just gets to be more fun as time goes on and |
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